Keeping a secure backup of your data is something that everyone ought to do, however from what is read and discussed around the 'net it seems that it's only a minority that actually do.
It doesn't take much imagination to guess how you'd cope should your hard-disk drive in your computer crashes, they don't last forever and often will simply curl up their proverbial toes without any warning.
So what should you do, personally I take two backups - one constantly backing up the important data files to an online storage service, the second being a local copy on removable storage such as a portable hard-disk drive.
My online storage is through a service called Dropbox who freely give out an initial 2 gigabytes of storage, their software is free to download and easily sets itself up on your computer. Thereafter whenever you make a change to an existing file or create any new ones in the specified folders they are automatically backed up to the Dropbox server.
It's best as with all of these online storage services that you have a broadband internet connection if only to ensure swift transfer of your data.
If you're interested in taking up their offer of free (or paid for larger storage allowances) you can get an immediate increase of 250 megabytes of storage through my referral code at this link.